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ivan

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She did not put the like terms down

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Theresa didn't change the subtraction to addition (5x+3)- when is should be 5x+3 +

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she needed to change the subtraction to addition

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-1x1 equals -1 not 1
She moved things around even though she still have a subtraction sign

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she didn't turn subtraction into addition

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she didn't put parentheses

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she did not turn the subtraction into addition and didn't change 2x into a negative

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She didn't turn the subtraction to a addition and didn't turn the nember to a negative
5x-2x

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She didn't turn the subtraction into addition and didn't turn the 2x into -2x

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The mistake she made was she didn't turn the  subtraction into
addition

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She needed to change the subtraction to addition. She also needed to change the 2x to -2x

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She didn't turn the subtraction into addition and didn't turn the 2x into -2x

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She didnt turn the subtraction into addition. She needs to change the two times a number to negative two times a number

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she didn't change the subtraction to addition

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she did not put the 1 to a negative 1 and the 2x to a -2x

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The error she did is that she multiplied wrong and got +1 instead of getting -1. Another error is that she moved stuff around without it being all addition.

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she didn't turn the subtraction into addition.

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she put 1 instead of -1
she moved stuff around without converting everything to addition

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She did not  change the subtraction
to addition she needs to  change the 2x to a negative.

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She did not put the parentheses. The 2x is suppose to be -2x

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Theresa did not put the negative in the number 1     -1(2x+1)

-2x-1

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The errors in problem #11 are when she was multiplying to get rid of the parentheses she multiplied -1 * +1 incorrectly (answer is -1). Also she moved the numbers around without turning everything to addition.

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#11 - What theresa did wrong was she put a Negative number where she was surpost to put a positive (-1) <- Yes  X->(1)

Answer: (-1)